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#include <stdio.h>
#include <stdlib.h>
struct StackItem_;
typedef struct StackItem_ {
char value;
struct StackItem_ *next, *prev;
} StackItem;
typedef struct Stack_ {
StackItem *top, *bottom;
} Stack;
void push_top(Stack *stack, StackItem *item) {
if (stack->top)
{
StackItem* old = stack->top;
old->next = item;
item->prev = old;
}
if (!stack->top) stack->bottom = item;
stack->top = item;
}
void push_back(Stack *stack, StackItem *item) {
if (stack->bottom)
{
StackItem* old = stack->bottom;
old->prev = item;
item->next = old;
}
if (!stack->bottom) stack->top = item;
stack->bottom = item;
}
StackItem* pop_top(Stack *stack) {
StackItem* old = stack->top;
stack->top = old->prev;
if (old->prev != 0)
{
stack->top->next = 0;
}
old->next = old->prev = 0;
return old;
}
StackItem* pop_back(Stack *stack) {
StackItem* old = stack->bottom;
stack->bottom = old->next;
stack->bottom->prev = 0;
old->next = old->prev = 0;
return old;
}
void printCargo(Stack *cargo, size_t len)
{
for (int i = 0; i < len; i++)
{
for ( StackItem *e = cargo[i].bottom; e != 0; e = e->next )
{
printf("%c", e->value);
}
printf("\n");
}
}
int main()
{
char *line = 0;
size_t len;
Stack *cargo;
size_t cargos;
ssize_t nread;
int amount, from, to;
while ((nread = getline(&line, &len, stdin)) != 0)
{
if ( line[1] == '1' ) continue;
if ( line[0] == '\n' ) break;
if ( !cargo ) {
cargos = (nread+1)/4;
cargo = (Stack*)malloc( sizeof(Stack) * cargos );
}
for (int i = 0; i < cargos; i++ ) {
char load = line[i*4+1];
if ( load != ' ' ) {
StackItem *box = malloc(sizeof(StackItem));
box->value = line[i*4+1];
box->next = box->prev = 0;
push_back(&cargo[i], box);
}
}
}
printCargo(cargo, cargos);
printf("---------------\n");
while (scanf("move %d from %d to %d\n", &amount, &from, &to) != EOF)
{
printf( "%d %d %d\n", amount, from, to );
for (int i = 0; i < amount; i++)
{
StackItem *item = pop_top(&cargo[from-1]);
push_top(&cargo[to-1], item);
printCargo(cargo, cargos);
printf("---------------\n");
}
}
for ( int i = 0; i < cargos; i++ )
{
printf( "%c", cargo[i].top->value );
}
printf("\n");
}
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